While I applaud all participants and interesting discussion in this thread, I feel that initial request was somewhat diluted. Since I am original poster, I will rephrase and add a couple of thoughts on this as I have been weighting on some ideas / proposals from the time this was asked for. This was not a request for fragmented sections or videos on particular feature(s) or intro video.... Or something that was done many years ago.
I wanted a single video that shows a complete workflow for making original tune, utilizing "some" inspirational ideas from pre-made items, exploring main power tools, lightly touching on deeper features. With a form of a song you would normally expect from Pop / Rock (~ their closest sub genres). If there is an incentive to produce such video I will gladly share a list of items that I feel need to be included.
I thought about how structure of the video might work to accommodate future features. The best that I could come up with is this: With each new release, the last 25% or so of the tutorial composition would be "sacrificed" and forked to include alternative, ~25% utilizing newly added tools. But working with the same initial SGU. Video should be broken up to chapters and each chapter should include a saved SGU progress file.
(Like alternative ending to a movie

)
Benefit of the forked approach is that:
#1 Only a part of video would be recorded to showcase new tools.
#2 The most important thing... People who watched it earlier will not have to re-watch parts they are familiar and a reverse of that... People who want to backtrack progress could jump in at any position to refresh the memory / see how the file was constructed. If a video has, lets say 7 chapters, 7 SGU files should be included.
Probably too ambitious.. I know. However, take a look again at the same video link I initially posted:
https://www.youtube.com/watch?v=Fo9sben5x1M61,000+ views, 400+ people liked it. It is a good video, but only a smaller / rough sketch for what I am requesting here.
P.S. Something to consider. This is a request for workflow video, not introductory one. It should be aimed at intermediate level user. Or at least someone who had spent some time with BIAB and has some idea of what BIAB is. Also, it should be done in minimalistic GUI. It is solely my belief that Peter and team left and maintains the big button interface out of respect to loyal followers. Which is a very nice gesture, but I am certain new users would prefer a more modern and spacious minimalistic view.